A hybrid adaptive antenna array

Xiaojing Huang*, Y. Jay Guo, John D. Bunton

*Corresponding author for this work

Research output: Contribution to journalArticle

106 Citations (Scopus)

Abstract

Owing to the excessive demand on signal processing and space constraint, a full digital implementation of a large adaptive antenna array at millimeter wave frequencies is very challenging. Targeted at long range high data rate point-topoint link in the 70/80 GHz bands, a novel hybrid adaptive antenna array which consists of analogue subarrays followed by a digital beamformer is presented in this paper to overcome the digital implementation difficulty. Two subarray configurations, the interleaved subarray and the side-by-side subarray, are proposed, and two Doppler resilient adaptive angle-of-arrival estimation and beamforming algorithms, the differential beam tracking (DBT) and the differential beam search (DBS), are developed. Simulation results on the DBT and DBS performance are provided using a 64 element hybrid planar array of four 4 by 4 element subarrays with the two subarray configurations, respectively. Recursive mean square error (MSE) bounds of the developed algorithms are also analyzed and compared with simulated MSEs.

Original languageEnglish
Article number5463231
Pages (from-to)1770-1779
Number of pages10
JournalIEEE Transactions on Wireless Communications
Volume9
Issue number5
DOIs
Publication statusPublished - May 2010
Externally publishedYes

Keywords

  • Adaptive antenna array
  • And mm-wave communications
  • Angle-of-arrival estimation
  • Beamforming
  • Subarray

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